Bought a brand new GLA top of the range on 30th November and have noticed condensation inside headlamps
MB Glasgow say the cannot see any problem
Never experienced this with my 4 previous Mercedes ML/ C Class
When I collected my new GLA, the lights were full of condensation. When I pointed this out, the dealer told me that this was normal and that they were vented and would dry out naturally.
However, after a few weeks, the Intelligent Light System failed completely and both lamps had to be replaced completely because all the electronics were soaked through..